[sw, dif_aon_timer] Introduce DIF AON Timer library
This change introduces public API for the AON Timer peripheral. It
also adds register definitions generation and blank implementation
to make this library compile.
Signed-off-by: Silvestrs Timofejevs <silvestrst@lowrisc.org>
diff --git a/sw/device/lib/dif/dif_aon_timer.c b/sw/device/lib/dif/dif_aon_timer.c
new file mode 100644
index 0000000..55168f6
--- /dev/null
+++ b/sw/device/lib/dif/dif_aon_timer.c
@@ -0,0 +1,10 @@
+// Copyright lowRISC contributors.
+// Licensed under the Apache License, Version 2.0, see LICENSE for details.
+// SPDX-License-Identifier: Apache-2.0
+
+#include "sw/device/lib/dif/dif_aon_timer.h"
+
+#include "aon_timer_regs.h" // Generated.
+
+// This just exists to check that the header compiles for now. The actual
+// implementation is work in progress.
